[uClibc-cvs] uClibc/libpthread/linuxthreads/sysdeps/alpha stackinfo.h,NONE,1.1 pt-machine.h,1.1,1.2
Erik Andersen
andersen at codepoet.org
Thu Feb 27 18:13:19 UTC 2003
Update of /var/cvs/uClibc/libpthread/linuxthreads/sysdeps/alpha
In directory winder:/tmp/cvs-serv18985/libpthread/linuxthreads/sysdeps/alpha
Modified Files:
pt-machine.h
Added Files:
stackinfo.h
Log Message:
Major update for pthreads, based in large part on improvements
from glibc 2.3. This should make threads much more efficient.
-Erik
--- NEW FILE: stackinfo.h ---
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* This file contains a bit of information about the stack allocation
of the processor. */
#ifndef _STACKINFO_H
#define _STACKINFO_H 1
/* On Alpha the stack grows down. */
#define _STACK_GROWS_DOWN 1
#endif /* stackinfo.h */
Index: pt-machine.h
===================================================================
RCS file: /var/cvs/uClibc/libpthread/linuxthreads/sysdeps/alpha/pt-machine.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -d -r1.1 -r1.2
--- pt-machine.h 20 Feb 2002 09:18:45 -0000 1.1
+++ pt-machine.h 27 Feb 2003 18:12:45 -0000 1.2
@@ -1,30 +1,39 @@
/* Machine-dependent pthreads configuration and inline functions.
Alpha version.
- Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth at tamu.edu>.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
+ modify it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
+ You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
+#ifndef _PT_MACHINE_H
+#define _PT_MACHINE_H 1
+
#ifndef PT_EI
# define PT_EI extern inline
#endif
-#include <asm/pal.h>
+#ifdef __linux__
+# include <asm/pal.h>
+#else
+# include <machine/pal.h>
+#endif
+extern long int testandset (int *spinlock);
+extern int __compare_and_swap (long int *p, long int oldval, long int newval);
/* Get some notion of the current stack. Need not be exactly the top
of the stack, just something somewhere in the current frame. */
@@ -32,6 +41,12 @@
register char *stack_pointer __asm__("$30");
+/* Memory barrier; default is to do nothing */
+#define MEMORY_BARRIER() __asm__ __volatile__("mb" : : : "memory")
+/* Write barrier. */
+#define WRITE_MEMORY_BARRIER() __asm__ __volatile__("wmb" : : : "memory")
+
+
/* Spinlock implementation; required. */
PT_EI long int
testandset (int *spinlock)
@@ -55,11 +70,6 @@
return ret;
}
-/* Spinlock release; default is just set to zero. */
-#define RELEASE(spinlock) \
- __asm__ __volatile__("mb" : : : "memory"); \
- *spinlock = 0
-
/* Begin allocating thread stacks at this address. Default is to allocate
them just below the initial program stack. */
@@ -70,7 +80,7 @@
#define THREAD_SELF \
({ \
register pthread_descr __self __asm__("$0"); \
- __asm__ ("call_pal %1" : "=r"(__self) : "i"(PAL_rduniq) : "$0"); \
+ __asm__ ("call_pal %1" : "=r"(__self) : "i"(PAL_rduniq)); \
__self; \
})
@@ -102,7 +112,16 @@
"2:\tmb\n"
"/* End compare & swap */"
: "=&r"(ret), "=m"(*p)
- : "r"(oldval), "r"(newval), "m"(*p));
+ : "r"(oldval), "r"(newval), "m"(*p)
+ : "memory");
return ret;
}
+
+/* We want the OS to assign stack addresses. */
+#define FLOATING_STACKS 1
+
+/* Maximum size of the stack if the rlimit is unlimited. */
+#define ARCH_STACK_MAX_SIZE 32*1024*1024
+
+#endif /* pt-machine.h */
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